What is the appropriate size of cable used to connect a MEP to an SDC?

The choice of cable size to connect a Mobile Electric Power (MEP) unit to a Shelter Distributed Command (SDC) must consider various factors, including the distance between the units, the load requirements of the SDC, and the appropriate ampacity (the maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration).

The correct choice of 25ft 200A is suitable because it provides adequate length and ampacity for most applications involving connection to an SDC. The 200A rating ensures that the cable can handle the electrical load without overheating or causing a voltage drop, which is crucial for maintaining efficient operation and safety. Additionally, the 25-foot length allows for enough flexibility in installation while remaining manageable and not excessively long, which could introduce additional resistance or require larger gauge wire.

Using a cable with a lower ampacity or shorter length may lead to overheating issues under load, while an excessively long cable could introduce voltage drop and inefficiencies. Thus, the selection of a 25ft 200A cable represents a balanced choice that can effectively meet the demands of connecting a MEP to an SDC.